Python qt5编写第三个gui---由主窗口弹出子窗

Python qt5编写第三个gui—由主窗口弹出子窗

在主窗口有几个按钮，通过按按钮，可以弹出来子窗口，完成效果如下图。

1.首先将主窗口的ui文件转化为Python文件

主窗口文件

Ui_jiemian3.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file '/home/li/桌面/python/qt/jiemiansan/jiemian3.ui'
#
# Created by: PyQt5 UI code generator 5.12
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.changgui = QtWidgets.QPushButton(self.centralwidget)
        self.changgui.setGeometry(QtCore.QRect(560, 90, 141, 25))
        self.changgui.setObjectName("changgui")
        self.zhineng = QtWidgets.QPushButton(self.centralwidget)
        self.zhineng.setGeometry(QtCore.QRect(560, 200, 141, 25))
        self.zhineng.setObjectName("zhineng")
        self.jiekou = QtWidgets.QPushButton(self.centralwidget)
        self.jiekou.setGeometry(QtCore.QRect(560, 300, 141, 25))
        self.jiekou.setObjectName("jiekou")
        self.yingyongzhanwang = QtWidgets.QPushButton(self.centralwidget)
        self.yingyongzhanwang.setGeometry(QtCore.QRect(560, 400, 141, 25))
        self.yingyongzhanwang.setObjectName("yingyongzhanwang")
        self.label = QtWidgets.QLabel(self.centralwidget)
        self.label.setGeometry(QtCore.QRect(90, 210, 381, 91))
        font = QtGui.QFont()
        font.setPointSize(30)
        self.label.setFont(font)
        self.label.setObjectName("label")
        self.tuichu = QtWidgets.QPushButton(self.centralwidget)
        self.tuichu.setGeometry(QtCore.QRect(670, 490, 89, 25))
        self.tuichu.setObjectName("tuichu")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 28))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.changgui.setText(_translate("MainWindow", "常规控制技术"))
        self.zhineng.setText(_translate("MainWindow", "智能控制技术"))
        self.jiekou.setText(_translate("MainWindow", "接口技术"))
        self.yingyongzhanwang.setText(_translate("MainWindow", "应用展望"))
        self.label.setText(_translate("MainWindow", "计算机接口控制技术"))
        self.tuichu.setText(_translate("MainWindow", "退出"))

子窗口文件

Ui_zijiemian.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file '/home/li/桌面/python/qt/jiemiansan/zijiemian.ui'
#
# Created by: PyQt5 UI code generator 5.12
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(617, 395)
        self.label = QtWidgets.QLabel(Dialog)
        self.label.setGeometry(QtCore.QRect(230, 10, 211, 41))
        font = QtGui.QFont()
        font.setPointSize(20)
        self.label.setFont(font)
        self.label.setObjectName("label")

        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.label.setText(_translate("Dialog", "常规控制技术"))

创建调用文件

创建调用文件.py

# -*- coding: utf-8 -*-

import sys
import cv2
from PyQt5.QtWidgets import QMainWindow
from PyQt5 import QtCore, QtGui, QtWidgets
from Ui_jiemian3 import Ui_MainWindow
from Ui_zijiemian import Ui_Dialog
import os

class Ui_Dialog(QtWidgets.QDialog, Ui_Dialog):
    def __init__(self):
        super(Ui_Dialog, self).__init__()
        self.setupUi(self)

class MainWindow(QMainWindow, Ui_MainWindow):
    
    def __init__(self, parent=None):
        super(MainWindow, self).__init__()
        self.setupUi(self)
        # 设置【打开子窗口】按钮
        self.changgui.clicked.connect(self.showDialog)
 
    def showDialog(self):
        # 创建子窗口实例
        dialog = Ui_Dialog()
        # 显示子窗口
        dialog.show()
        # 实现子窗口中的【确定】按钮功能
        # 关联【确定】按钮
        dialog.exec_()

if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)
    mainWindow = MainWindow()
    mainWindow.show()
    sys.exit(app.exec_())

首先调入俩个文件的类，然后再创建一个主窗口实例和子窗口实例，
在主窗口的类中定义打开子窗口的函数showDialog。

参考链接：

pyqt：点击按键打开新/子窗口的两种方法

python pyqt5 点击按钮来打开另一个窗口

【PyQt】点击一个窗口的按钮来打开另一个窗口

本文地址：https://blog.csdn.net/weixin_45839124/article/details/107225100